Probably not people who use "u" for "you," and definitely not people who use "ur" for "your/you're." Ur? Ur was a fucking city in ancient Mesopotamia, and is now at best a confused, stalling interjection. Really, how lazy are you guys? Is "y-o" that hard to type? Are you trying to brand yourselves as Generation Y slacker text message culture automatons? And what's the point of trying to be a slacker? If it doesn't come naturally, it's not really slacking. If it does come naturally, where the fuck did you learn to write the English language? Why don't you just go work on making your hair more perfectly messy, or carefully rip more random holes in your clothes?